Somatostatin receptor scintigraphy in the follow up of neuroendocrine neoplasms of appendix

Table 1 Demographic and clinical characteristics of 35 studies patients

Characteristics	Value
Age (yr)
Mean ± SD (range)	43.7 ± 17.3
Sex, n (%)
Male	12 (34.3)
Female	23 (65.7)
Histopathology, n (%)
Carcinoid of appendix	34 (97.1)
Tubular carcinoid	1 (2.9)
Initial clinical grade, n (%)
G1	17 (48.6)
G2	12 (34.3)
G3	6 (17.1)
Initial clinical stage, n (%)
IIa	10 (28.57)
IIb	6 (17.14)
IIIa	6 (17.14)
IIIb	7 (20.00)
IV	6 (17.14)
Surgery, n (%)
Appendectomy	22 (62.9)
Right hemicolectomy	13 (37.1)

SD: Standard deviation; G: Grade.

Table 2 Diagnostic accuracy of somatostatin receptor scintigraphy for detection of local recurrence and metastases

Parameter	(%)	95%CI
Sensitivity	92.31	63.97-99.81
Specificity	86.36	65.09-97.09
Positive predictive value	80.00	58.01-92.05
Negative predictive value	95.00	74.15-99.21
Accuracy	88.57	73.26-96.80

CI: Confidence interval.

Table 3 Distribution of somatostatin receptor scintigraphy findings in different groups of the patients according to the stage of the resected tumor

Stage	TP	TN	FP	FN	Total
IIa	0	8	2	0	10
IIb	0	5	1	0	6
IIIa	0	6	0	0	6
IIIb	6	0	0	1	7
IV	6	0	0	0	6
TOTAL	12	19	3	1	35

TP: True positive; TN: True negative; TP: False positive; TN: False negative.